Coin-actuated medical battery.



Patented 061.8, mi. N. M. WATSON.

COIN ACTUATED MEDICAL BATTERY.

I (Apglication filed Jan. 28, 1901.)

' 2 Sheafs-Shaet I.

(No Model.)

INVENTOR. 91. W.

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No. 684,0!4. Patented Oct. 8, I90l.

N. M. WATSON.

COIN AGTUATED MEDICAL BATTERY.

(Applicafiion filed Jan. 28, 1901.)

2 Sheets-Sheet 2.

(No Model.)

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UNITED STATES TPATEN'T OFFIC NELSON WATSON, OF DETROIT,MICI-IIGAN.

COlN-ACTUATED MEDICAL BATTERY.

SPECIFICATION formingpart of Letters Patent No. 684,014, dated October 8, 1901. Application filed January 28, 1991. $eria1 No. 45,024. (No model.) 7

To all whom it may concern: 7 Be it known that I, NELSON M. WATSON, a citizen of the United States, residing at De-' troit, in the county of Wayne, State ,of Michigan, have invented certain new and useful Improvements in Coin-Actuated Medi-' cal Batteries; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings,.and to the figures of reference marked thereon, which form a part of this specification.

This invention relates tocoin-actuated medical batteries; and it consists inthe construction and arrangement of parts hereinafter fully set forth, and pointed out particularly in the claims.

The object of the invention is to provide simple and eficient means whereby upon the insertion of a coin and the operation of a movable handle of the device an electric currentmay beclosed through the hands of the operator, the arrangement being such as to enable the volume of current to be regulated and a further arrangement provided for cushioning the, return of the movable handle' when released. The above object is attained by the mechanism illustrated in the accom panying drawings, in whicha I Figure 1 is a front elevation of the machine. Fig. 2 is a rear elevation of the operative mechanism, the electric circuit showing in diagram and the base of the machine appearing in transverse section. Fig. 3 is a horizontal section as on line 3 '3 of Fig. 2. Fig. 4 is an enlarged detail in section of a portion of the operative mechanism. Fig. 5

. ed to be grasped by the hand of the operator.

At the opposite side of the machine is a rotary'handle or crank 4, attached to the shaft 5, suitably journaled in the machine. Con

nected with the fixed handle 3 is one side of an electric conductoror circuit 6, which leads to a battery or source of electricity-7and includes the coil of the electromagnet 8. The

opposite side of said line. leads from the battery and terminates in a spring-terminal or contact-point 10, insulated from the metal base 11 of the machine by the non-conducting contact-block 12, upon which the springterminal is mounted. Bivoted uponthe me- Q tallic base 11 is a bell-crank lever 13, one arm of which stands normally adjacent to the ,springterminal 10 and is adapted to be moved into contact therewith, said, arm" carrying a beveled face 14, (see Fig. 3,) de-' scribing the segment of a circle andadapt: ed to embrace and temporarily confine'the edge of a coin. A'vertical coin-chute 15 is receive and direct the coin into contact with the beveled face 14 of the bell-crank lever 13. Upon the shaft 5, carrying the crank 'or handle14, is an eccentric 17,, (see Fig.4,)

adapted/to engage the inner end of a hori-' '7 pivotedupon a shaft 16- and-is adapted to zontally-movable pin 18, whose opposite end coin is directed into the chute .15, it passes downward and lodges against the beveled face 14'of the bell-crank lever13, and at the same time the upper arc-of the. coin is engaged by the confining-channelsofsaid chute. T A rotation of the crank or handle 4 will then carry.-

the eccentric 17 against the pin 18 and cause said pin to tilt the coin-chute l5 upon'its shaft-or piyotild thereby crowding the edge of the coin againstthe beveled face 14 of the bell-crank lever and forcing the end of saidlever intocontact with the spring-terminal 10, thereby closing the circuit through saidterminal and through the metal base and shaft 5 to'the handle or crank 4, placing said handie, together with the handle 3, in circuit with the battery and completing the circuit through the body of the operator when said handles are held by the operators hands, As

the coin-chute 15 is tilted farther through the operation of the handle 4 the coin is carried past the inclined face 14 of the bell-crank lever, when it is released and discharged into thelbase of the machine.

shaft 5 and attached at one end thereto is a Mounted upon the IOO coiled spring 19, whose opposite end is attached to the base and whose tension is exerted to return the shaft 5 and handle 4 to their normal position after an operation. When the handle 14 is released by the operator, said spring returns it, and at the same time the arm 20, mounted upon the shaft 5 and adapted to move in frictional contact therewith, engages the end 21 of the bellcrank lever extending into the path of said arm and actnates said lever to carry the opposite end thereof from contact with the spring-terminal and break the electric circuit, the chute being restored to its normal position by the spring 22, adjacent thereto.

To provide an intermittent current when the handles are placed in circuit "with the battery, a conductor 23 (see Fig. 2) is employed, which is connected with the coil of the electromagnet and leads to a bindingscrew 24, connected with a contact-arm 25, (see Fig. 1,) carrying an adjustable contactscrew 26, whose point stands adjacent to a vibrator 27 in circuit with the metal base 11 and in the field of said electromagnet, so that upon the closing of the main circuit or contact-terminal 10 the circuit is also closed through said vibrator, thereby putting said vibrator in operation.

To provide for regulating the current which flows through the handles of the machine and to the operator grasping said handles, the core (not shown) of the electromagnet is covered by a movable sleeve 27, which embraces said core and which is connected, by means of apin 28, with a bracket 29, mounted upon the vertically-movable rod 30, which is provided at its lower end with a rack which meshes with a pinion 32 on the shaft 5, whereby when said shaft is rotated through the handle 4 the rod is raised, carrying upward the sleeve 27, embracing the core of the magnet, and efiecting a proportional increase in the flow of current. In order to register the amount of current being used, there is mounted in the bracket 29 and movable therewith a rack-bar 33, (see Fig. 2,) whose upper end engages a pinion 34, mounted on the shaft of a hand 35, adapted to sweep the graduated face of a dial 36, whereby as said rack-bar is carried upward with the operation of withdrawing the sleeve from the core of the magnet it causes the indicating-hand 35 to register the amount of current on said graduated scale. When the crank or handle 4 has been caused to make nearly a complete revolution, considerable tension is placed upon the spring 19, which upon the release of the handle will return said handle with a force liable to cause injury to the parts. To obviate a forced return of the handle 4 upon its release, the lower end of the rod 30 is provided with a piston 37, (shown by dotted lines in Fig. 2,) which is adapted to reciprocate in a closed air-cylinder 38 and which is drawn upward as said rod is raised to actuate the sleeve of the core and the hand of the dial, so that said piston upon the release of the handle 4 after an operation of the machine is at the top of the cylinder, whereby an air-cushion is formed in said cylinder below the piston, which prevents a sudden return of the handle 4, but allows said parts to gradually resume their former or normal position,

In the face of the case 2 is a coin-opening 39, which directs the coin to the chute 15.

In the operation of this device a coin is placed in said opening 39 and is conveyed by the chute 15 to the curved beveled face 14 of the bell-crank lever 13, when the operator grasps the handles and moves the handle 4 so as to cause the pivoted chute 15 to force the coinagainst the beveled face of the bellcrank lever and carry the point of said lever into contact with the terminal 10, thereby placing the handles in circuit with the battery and the vibrator through the electromagnet. The initial current is comparatively weak, owing to the fact that the sleeve 27 covers the core of the magnet. After the handles have been placed in circuit, however, any desired increase in the flow of current may be efieot ed by rotating the handle 4 so as to with draw the sleeve from the core of the magnet,- as before described. When the coin is forced past the beveled face of the bell-crank lever, it passes from the chute 15, so that when the handle 4 has been released and the parts restored to the normal position the machine cannot be again operated until another coin is inserted.

Having thus fully setfor'th my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a machine for the purpose set forth, the combination of an electric circuit having one terminal in a fixed handle and the other in a spring-contact, a bell-crank lever adjacent to said contact, said lever carrying a beveled face adapted to engage the margin of a coin, a movable coinchute, adapted to direct a coin to the beveled face of said lever, a rotary shaft adapted to move said coinchute to cause the coin therein to move said lever into contact with said terminal and an operative handle upon said shaft.

2. In a machine for the purpose set forth, the combination of a normally open electric circuit, a fixed handle in which one end of said circuit terminates, a spring-contact in which the other end of said circuit terminates, a movable conductor agent adapted to move into and out of engagement with said spring-contact to place said movable agent in circuit with the source of electricity, said coin-chute, whereby, by a movement of said handle the coin-chute may be actuated to cause the coin therein to engage and. carry the movable agent into contact with said spring-terminal and establish a continuity of the circuit through said movable parts to saidmovable handle.

3. In a machine for the purpose set forth, the combination of an electric circuit including a source of electricity, and an electromagnet, a flied handle connected with one terminal of said circuit, a contact-spring connected to the opposite terminal of said circuit, a movable handle, a rotary shaft carrying said handle, a movable coin chute connected with said movable handle and adapted by its movement to cause a coin to actuate said movable agent and carry it into contact with said spring=terminal, a pinion on said shaft, a rack engaging said pinion, a spring for returning said shaft; an air-cylinder and a piston on said rack working in said cylinder; In testimony whereof I sign this specifica= tion in the presence of two witnesses.

NELSON M. WATSON; Witnesses:

E. S. WHEELER, EDITH MYNQTT. 

